import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/index")
public class IndexServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        HttpSession session=req.getSession(false);
        String username= (String) session.getAttribute("username");
        Integer count=(Integer)session.getAttribute("count");
        count+=1;
        session.setAttribute("count",count);
        resp.setContentType("text/html;charset=utf8");
        resp.getWriter().write("<h3>欢迎你！"+username+"这是第"+count+"次访问页面 <h3>");
    }
}
